Manual Coding System Revision

EPI Manual CodesThe Electrical Patents Index Manual Codes (EPI manual codes) system is a hierarchical classification and indexing system, intended for use as an online retrieval tool for abstracts of Electrical and Electronic engineering patents.

CPI Manual and Fragmentation CodesThe Chemical Patents Index Manual Codes (CPI Manual Codes) and Fragmentation Codes system is a hierarchical classification and indexing system, intended for use as an online retrieval tool for abstracts of Chemical and Biological patents.

CPI Manual and Fragmentation CodesSince the introduction of Section B Manual and Fragmentation codes in 1963 and Section C codes in 1965, 20 CPI coding revisions have taken place (in consultation with Customers) to accommodate changes in technology, provide finer subject matter breakdown and thus improve information retrieval. 2015 saw the first major revision of DWPI Non-Structural Fragmentation Codes since 1981.

Why are Manual and Fragmentation Codes important?

These codes cover both the novel technical details disclosed within the patent, and the invention's application. They enable an extra level of precision and accuracy when searching patent information.

Why is it important to revise Manual Codes?

We believe that it is critical to index our patent information in line with technological developments, to help our customers find the information they need with precision and accuracy, as easily as possible.

If you would like to submit a suggestion for possible inclusion in the 2018 DWPI Manual Code Revision, please contact us via email at: scientific.mcrdwpi@thomsonreuters.com or via the following form(s):